CONTACT US

For more information on our West Nile virus vaccines , call Customer Service at 1-800-521-5767 or visit www.merck-aninmal-health-usa.com.

To report an adverse reaction, product-related problem, or human exposure, please call Merck Animal Health Technical Services:

Companion Animal (Dogs, Cats, Horses) 800-224-5318

Normal business hours are 8:30 am to 5:00 pm EST.

For after-hours emergencies, please call the numbers shown above. A recorded message will provide the telephone numbers for emergency support services if immediate assistance is needed.

Postal Address
Intervet Inc.
29160 Intervet Lane
Millsboro, DE 19966-4217